package com.atguigu.gulimall.ssoclient.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.client.RestTemplate;

import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.List;

@Controller
public class HelloController {

    @Value("${sso.server.url}")
    private String ssoServerUrl;

    /**
     * 无需登录即可访问
     * @return
     */
    @GetMapping("/hello")
    @ResponseBody
    public String hello(){
        return "hello";
    }

    @GetMapping("/employees")
    public String employees(Model model, HttpSession session,
                            @RequestParam(value = "token",required = false) String token){

        // 抽取成filter  针对所有系统接口
        if (!StringUtils.isEmpty(token)){
            RestTemplate restTemplate = new RestTemplate();
            ResponseEntity<String> forEntity = restTemplate.getForEntity("http://sso.com:8080/userInfo?token=" + token, String.class);
            String body = forEntity.getBody();
            session.setAttribute("loginUser",body);
        }

        Object user = session.getAttribute("loginUser");
        if (null == user){
            // 未登录 跳转到登录服务器进行登录
            // redirect_url为登录服务器成功回跳的地址
            return "redirect:" + ssoServerUrl + "?redirect_url=http://client1.com:8081/employees";
        }else {
            List<String> emps = new ArrayList<>();
            emps.add("张三");
            emps.add("李四");
            model.addAttribute("emps",emps);
            return "list";
        }
    }
}
